Biochar generator and associated methods

ABSTRACT

A biochar generator to be carried by a vehicle may comprise a pyrolysis chamber, an auger, a heater, and a vapor condenser each connected to the pyrolysis chamber. The biochar generator may also include a synthesis gas collection chamber to collect synthesis gas, and a bio oil collection chamber to collect bio oil, each in communication with the vapor condenser. A biochar collection chamber may be included to collect biochar dispensed from the pyrolysis chamber.

RELATED APPLICATIONS

The present application claims the benefit of U.S. Provisional PatentApplication Ser. No. 61/407,079 titled PORTABLE BIOCHAR GENERATOR ANDASSOCIATED METHODS filed by the inventor of the present invention onOct. 27, 2010, the entire contents of which are incorporated herein byreference.

FIELD OF THE INVENTION

The present invention relates to the field of biochar generators and,more specifically, to the field of biochar generators to be carried by avehicle to produce biochar.

BACKGROUND OF THE INVENTION

It is commonly known that the cultivation and harvesting of food cropsand forest products results in the production of vast quantities oforganic waste or biomass. It is also commonly known that biomass may bedecomposed at high temperatures and in a reduced-oxygen setting in areaction known as pyrolysis. Pyrolysis results in the release ofvolatile gasses and a residual solid material known as biochar. When thevolatile gasses are condensed, a high-energy-content oil, called biooil, is produced. Any remaining gas, called synthesis gas, is composedprimarily of hydrogen and carbon monoxide, with small amounts of methanegas. Biochar, when used as a soil additive, provides a habitat for fungiand microorganisms beneficial to plant growth, stores moisture,decreases soil erosion, and decreases fertilizer runoff. Bio oil has ahigh BTU content, can be converted directly into electricity inpetroleum-based power plants, and can be refined into diesel fuel. Verypure synthesis gas can be burned in a manner similar to natural gas,while less pure synthesis gas can still be burned for heat.

It is further commonly known that the typical pyrolysis reaction takesplace at a location remote from that of the collection of the biomassconsumed in the reaction. Once collected, the biomass is typicallytransported to a facility that either chips, grinds or otherwisefragments the biomass, and then the fragmented biomass is generallytransported to the pyrolysis reaction site. The biomass fragments maythen be augured into a pyrolyzing chamber. The auger provides a sealagainst oxygen to prevent combustion in the pyrolyzing chamber. Thebiochar and volatile gasses produced from the pyrolysis reaction risewithin the pyrolyzing chamber until they are extracted. The biochar maybe allowed to cool and is collected. The volatile gasses may becondensed and the resulting bio oil and synthesis gasses may be burnedto provide the heat that drives the pyrolysis reaction. The collectedbiochar may then be transported to a field, orchard, packaging facilityor other application. The typical biochar generation method, therefore,is inefficient in that energy must be consumed in the collection of thebiomass, in the transportation of the collected biomass to thefragmentation site, in the fragmentation of the biomass, in thetransportation of the fragmented biomass to the pyrolyzing chamber, ingenerating the heat that drives the pyrolysis reaction, and in thetransportation of the biochar, bio oil and synthesis gasses to theirultimate applications.

FIG. 1 illustrates a schematic diagram depicting the typical biochargeneration process known in the prior art. From the start (Block 201),biomass, in this example wood, is transported by truck to a biochargeneration facility and then deposited in a storage area at Block 202.The biomass is moved to a biomass fragmenter, in this example a chipper,at Block 203. At Block 204, the fragmented biomass is fed into an auger.The fragmented biomass passes from the auger into the pyrolysis chamberat Block 205. Heat is introduced into the pyrolysis chamber at Block206. Vaporized synthesis gasses and vaporized bio oil exit the pyrolysischamber and enter the vapor condenser at Block 207. The condensedsynthesis gasses are filtered at Block 208 and then fed back into theheater at Block 206. The condensed bio oil is collected at Block 209 andis transported by truck for refining or other use at Block 213. Thebiochar passes through the char spout at Block 210, is collected atBlock 211 and is allowed to cool in the biochar cooling area at Block212. The cooled biochar is then transported by truck for ultimateapplication at Block 214.

There are numerous devices that have attempted to provide a biochargenerator. For example, U.S. Pat. No. 7,322,301 to Childs, discloses asystem and method for processing sewerage sludge and other organic basedfeedstocks, in an energy efficient manner that minimizes or eliminatesunwanted byproducts, including pathogens, and generates usefulenvironmentally safe products. The sewage sludge or other feedstocks arepartially dried before being input to a gasifier operating under partialpyrolitic conditions with a small amount of oxygen or air present toproduce fuel in the form of synthesis gas, bio-oil fuel and char. Asmall percentage of the fuel may be used to maintain the operation ofthe feedstock drying process after it is started and a small amount ofthe synthesis gas produced in the gasifier reacts with the small amountof oxygen present with the feedstock to maintain the pyrolysistemperature in the gasifier in order to make the system economicallyviable.

U.S. Published Patent Application No. 2008/0006520 by Badger et al.,discloses a system for the conversion of carbonaceous feedstocks intouseful sources for energy, chemicals, or other materials including adryer into which the carbonaceous feedstock is placed and a reactorchamber in communication with the dryer for receiving the driedfeedstock. The system also includes a heat carrier for furtherprocessing of the feedstock in the generation of useful sources ofenergy, chemicals or other material. The system further includes a charseparation and recovery mechanism linked to the reactor chamber forseparating char produced as a result of processing of feedstock withinthe reactor chamber from the heat carrier. The system still furtherincludes a condenser to recover a liquid product condensed from the gasand vapor, and a furnace for burning char as needed for operation of thedisclosed system.

U.S. Published Patent Application No. 2007/0012232 by Skrypski-Manteleet al., discloses a system and method for thermal conversion of sludgeinto fuel and other products such as char without the creation ofreaction water. The system and method disclosed allows for theindependent control of mixing and the movement of sludge throughpyrolysis systems.

U.S. Pat. No. 5,853,548 to Piskorz et al., discloses a thermolysisprocess for the production of volatiles for an external combustor orliquefaction of biomass solids. The thermolysis is carried out in asingle fluidized bed of inert material operating at near atmosphericpressure, relatively low temperature, long residence times and moderateheating rates. The distribution of thermolysis products is among solid(char) and gases. The product effluent can either be quenched, toproduce a high liquid yield in addition to a low char yield, or can beused in either the same combustor or a second combustor to produce heatenergy. In using a quencher, the quenched liquid is of a similarcomposition to those obtained by a so-called fast pyrolysis process. Thespecified conditions are such as to allow production of liquids in highyields in an energy efficient manner. The low severity of the conditionsallows simplified process design and scale-up leading to lower capitaland operating costs as well as easier control.

U.S. Pat. No. 4,253,406 to Spitz et al. discloses a flueless portableprimary combustion chamber forming part of a pollution controlincineration system having an elongated duct with one or more inletspositioned at or near grade level. An upright standpipe covers an inletopening to provide a polluted gas inlet to the duct from a locationelevated above grade. The portable primary combustion chamber isconstructed with a closed top and an open bottom which overfits thestandpipe in a manner to allow combustible material to be burned withinthe shell and to direct combustion gases downwardly into the ductthrough the top of the standpipe.

There exists a need to provide a biochar generator that is adapted to beportable, and to be carried by a vehicle, so as to eliminate some of theinefficiencies inherent in the prior art.

SUMMARY OF THE INVENTION

Such needs are addressed in the present invention. The biochar generatorof an embodiment of the present invention provides for a biochargenerator that may be carried by a vehicle, as well as associatedmethods which reduce, or eliminate, the need to transport biomassbetween a harvesting site and a storage site, as well as between thestorage site and a fragmentation site. An embodiment of the presentinvention also advantageously provides a biochar generator to be carriedby a vehicle which reduces or eliminates the need to transportfragmented biomass between the fragmentation site and the site of thepyrolysis chamber. The biochar generator and methods according to anembodiment of the present invention further advantageously reduces, oreliminates, the need to transport synthesis gasses, bio oil and biocharfrom the site of the pyrolysis reaction to the ultimate site of storage,consumption, refinement or application.

The biochar generator according to an embodiment of the presentinvention still further advantageously reduces fuel consumptionassociated with the transportation of biomass and with thetransportation of products from a pyrolysis reaction to the ultimatesite of storage, consumption, refinement or application. The biochargenerator according to an embodiment of the present invention alsoadvantageously provides the ability to use the products from thepyrolysis reaction as a source of fuel for the heat required as acatalyst for the pyrolysis reaction, as well as a source of fuel for thevehicle harvesting the biomass or for the vehicle carrying the portablebiochar generator. Other advantages of one or more aspects of thepresent invention will be apparent to a skilled artisan after aconsideration of the drawings and accompanied descriptions.

These and other objects, features and advantages according to thepresent invention are provided by a biochar generator to be carried by avehicle that may comprise a pyrolysis chamber, and an auger connected tothe pyrolysis chamber. The auger may include an opening to accept a flowof biomass. The biochar generator may also include a heater and a vaporcondenser each connected to the pyrolysis chamber. The biochargenerator, according to an embodiment of the present invention, mayfurther include a synthesis gas collection chamber in communication withthe vapor condenser to collect synthesis gas from the vapor condenser,and a bio oil collection chamber in communication with the vaporcondenser to collect bio oil from the vapor condenser.

The biochar generator may further include a biochar collection chamberin communication with the pyrolysis chamber. A biochar conveyor may beincluded to collect biochar dispensed from the pyrolysis chamber. Abiochar cooling chamber may be in communication with the biocharcollection chamber via the biochar conveyor. The auger may fragment theflow of biomass before passing the flow of biomass into the pyrolysischamber.

In some embodiments of the present invention, the auger may permitselective control of an amount of air to be introduced into thepyrolysis chamber. The heat produced by the heater may be within a rangeof between about 300 degrees Celsius and 600 degrees Celsius. The heatmay be maintained for an amount of time. A heat duct may selectivelycontrol passage of heat from the heater into the pyrolysis chamber. Apyrolysis reaction may occur in the pyrolysis chamber and may produce atleast one product selected from the group consisting of a vaporizedsynthesis gas, vaporized bio oil and the biochar.

The biochar generator according to an embodiment of the presentinvention may also include a vapor duct that may selectively controlpassage of the vaporized synthesis gas from the pyrolysis chamber to thesynthesis gas collection chamber. The vapor duct may also selectivelycontrol passage of the vaporized bio oil from the pyrolysis chamber tothe bio oil collection chamber. The synthesis gas collection chamber maybe connected to the heater, and the heater may be selectively fueled bythe synthesis gas from the synthesis gas collection chamber. The bio oilcollection chamber may be connected to the heater, and the heater may beselectively fueled by the bio oil from the bio oil collection chamber.

In some embodiments of the present invention, the biochar generator maybe located onboard a biomass harvesting machine. The bio oil collectionchamber may be connected to a fuel system of the biomass harvestingmachine, and the biomass harvesting machine may be selectively fueled bythe bio oil from the bio oil collection chamber. In other embodiments ofthe present invention, the biochar generator may be located onboard awheeled tow-behind vehicle attached to a biomass harvesting machine.

In other embodiments of the present invention, the biochar generator maybe located onboard an independently operated wheeled vehicle followingbehind a biomass harvesting machine. The bio oil collection chamber maybe connected to a fuel system of the independently operated wheeledvehicle following behind a biomass harvesting machine, and theindependently operated wheeled vehicle following behind the biomassharvesting machine may be selectively fueled by the bio oil from the biooil collection chamber. A biochar application device in communicationwith the biochar cooling chamber may selectively permit application ofthe biochar. The vehicle that carries the biochar generator may befueled by either the synthesis gas from the synthesis gas collectionchamber or the bio oil from the bio oil collection chamber.

A method aspect of the present invention is for using a biochargenerator. The method may include passing a flow of biomass through theopening in the auger. The method may also include fragmenting the flowof biomass with the auger, and passing the flow of biomass into thepyrolysis chamber. The method may further include producing heat fromthe heater and passing the heat into the pyrolysis chamber. The methodmay still further include creating a pyrolysis reaction in the pyrolysischamber, producing a vaporized synthesis gas, producing a vaporized biooil and a biochar. The method may also include condensing a synthesisgas from the vaporized synthesis gas in the vapor condenser, condensinga bio oil from the vaporized bio oil in the vapor condenser, passing thesynthesis gas into the synthesis gas collection chamber, and passing thebio oil into the bio oil collection chamber. The method may furtherinclude dropping the biochar onto the biochar conveyor and conveying thebiochar into the biochar cooling chamber.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram showing the typical biochar generationprocess known in the prior art.

FIG. 2 is a side schematic view of a biochar generator to be carried bya vehicle according to the present invention.

FIG. 3 is a schematic diagram showing a system and method of generatingand using biochar, synthesis gas and bio oil using a biochar generatorto be carried by a vehicle according to the present invention.

FIG. 4 is a side schematic view of a biochar generator located onboard abiomass harvesting machine according to an embodiment of the presentinvention.

FIG. 5 is a side schematic view of a biochar generator located on atow-behind vehicle according to an embodiment of the present invention.

FIG. 6 is a side schematic view of a biochar generator located onboardan independently operated vehicle to follow behind a biomass harvestingmachine according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

The present invention will now be described fully hereinafter withreference to the accompanying drawings, in which preferred embodimentsof the invention are shown. Like numbers refer to like elementsthroughout. This invention may, however, be embodied in many differentforms and should not be construed as limited to the embodiments setforth herein. Rather, these embodiments are provided so that thisdisclosure will be thorough and complete, and will fully convey thescope of the invention to those skilled in the art. Those of ordinaryskill in the art will realize that the following embodiments of thepresent invention are only illustrative and are not intended to belimiting in any way. Other embodiments of the present invention willreadily suggest themselves to such skilled persons having the benefit ofthis disclosure.

A biochar generator to be carried by a vehicle 100 according to anembodiment of the present invention can advantageously provide a systemfor the generation of biochar that is adapted to reduce the energyconsumed in the typical generation of biochar. More specifically, thebiochar generator 100 according to the present invention advantageouslyeliminates the need to transport biomass to remote locations forfragmentation, pyrolysis and ultimate application. This is accomplishedby providing a biochar generator 100 onboard the machinery harvestingthe biomass as illustrated, for example, in FIG. 4. The biochargenerator 100 according to an embodiment of the present invention alsomay be provided onboard a vehicle towed behind the machinery harvestingthe biomass as illustrated, for example, in FIG. 5. Additionally, thebiochar generator 100 according to an embodiment of the presentinvention may be provided onboard an independently operated vehiclefollowing behind the machinery harvesting the biomass as illustrated,for example, in FIG. 6.

Referring now to FIGS. 2-6, general details of the biochar generator 100according to an embodiment of the present invention are now described.As will be discussed in greater detail below, the unique design of thebiochar generator 100 includes an auger 101, a pyrolysis chamber 102, aheater 103, a heat duct 104, a vapor duct 105, a vapor condenser 106, asynthesis gas collection chamber 107, a bio oil collection chamber 108,a biochar cooling chamber 109, a biochar conveyor 110, a biocharcollection chamber 111, and a biochar application device 112.

Individual portions of the biochar generator 100 according to anembodiment of the present invention will now be discussed in greaterdetail. As depicted in FIG. 2, in one embodiment of the biochargenerator 100, a flow of biomass 101A may be directed into the auger101. The flow of biomass 101A may pass through the auger 101 and enterthe pyrolysis chamber 102. The auger 101 may be adapted to control theamount of air permitted to pass into the pyrolysis chamber 102. The heatduct 104 may permit passage into the pyrolysis chamber 102 of the heatproduced by the heater 103. The temperature within the pyrolysis chamber102 may be increased to a predetermined temperature range of between 300degrees Celsius and 600 degrees Celsius by the controlled introductionof heat produced by the heater 103. The temperature within the pyrolysischamber 102 may be maintained at the predetermined temperature range fora predetermined period of time. The flow of biomass 101A may be heatedwithin the pyrolysis chamber 102 to the point where vaporized synthesisgasses, vaporized bio oil and/or biochar are produced from the heatedflow of biomass 101A.

The vaporized synthesis gasses and vaporized bio oil produced from theheated flow of biomass 101A may pass through the vapor duct 105 into thevapor condenser 106. The condensed synthesis gas may pass into thesynthesis gas collection chamber 107. The synthesis gas collectionchamber 107 may be adapted to permit the synthesis gas collected thereinto be fed into the heater 103 as a source of fuel. The condensed bio oilmay pass into the bio oil collection chamber 108. The bio oil collectionchamber may be adapted to permit the bio oil collected therein to be fedinto the biomass harvesting machinery as a source of fuel. The hotbiochar may pass into the biochar cooling chamber 109. The biocharconveyer 110 may permit passage of the cooled biochar into the biocharcollection chamber 111. The cooled biochar may pass through the biocharapplication device 112 to be deposited on a field, orchard or otherultimate application.

After having had the benefit of reading this disclosure, those skilledin the art will appreciate that the biochar generator 100, whiledepicted in FIGS. 2 and 4 as being positioned onboard a biomassharvesting machine, may be positioned onboard a wheeled tow-behindvehicle attached to a biomass harvesting machine (FIG. 5), while stillaccomplishing the goals, features and objectives according to thepresent invention. Furthermore, those skilled in the art will alsoappreciate that the biochar generator 100 may be positioned onboard anindependently operated wheeled vehicle that is adapted to follow behindthe biomass harvesting machinery (FIG. 6). Although not shown, thepresent invention contemplates that in such an embodiment, a conveyormay be provided to move the biomass from the biomass harvester to thebiochar generators. Those skilled in the art will also appreciate thatthe present invention contemplates any means of conveying the biomassfrom the biomass harvester to the biochar generator.

Those skilled in the art will appreciate that the synthesis gascollection chamber 107 may be adapted to feed the synthesis gascollected therein to the biomass harvesting machinery as a source offuel. Likewise, those skilled in the art will appreciate that the biooil collection chamber 108 may be adapted to feed the bio oil collectedtherein to the heater 103 as a source of fuel. Still further, thoseskilled in the art will appreciate that the predetermined temperaturerange and the predetermined period of time the temperature range ismaintained may be adjusted to yield greater or lesser proportionateamounts of bio char, synthesis gas and bio oil and may be adjusted tomore effectively pyrolyze different biomass sources. Finally, thoseskilled in the art will appreciate that while the heater 103 isdescribed as using either synthesis gas or bio oil as a fuel source,some other fuel source, such as gasoline or diesel, must be used, atleast initially, until sufficient synthesis gas or bio oil is producedas a result of the pyrolysis reaction to substitute for the initial fuelsource.

FIG. 3 illustrates a schematic diagram depicting the system and methodof generating biochar, synthesis gas and bio oil using the biochargenerator 100 according to an embodiment of the present invention. AtBlock 301, biomass, in this example waste from a combine, is feddirectly into the auger attached to the pyrolysis chamber at Block 302.The fragmented biomass passes from the auger into the pyrolysis chamberat Block 303. Heat is introduced into the pyrolysis chamber at Block304. Vaporized synthesis gasses and vaporized bio oil exit the pyrolysischamber and enter the vapor condenser at Block 305. The condensedsynthesis gasses are filtered at Block 306 and then fed back into theheater at Block 304. The condensed bio oil is collected at Block 307 andis then fed into the combine as a fuel source back at Block 301. Thebiochar passes through the char spout at Block 308, is collected atBlock 309 and is allowed to cool in the biochar cooling area at Block310. The cooled biochar is then applied to the field at Block 311. Thoseskilled in the art will appreciate that biochar, synthesis gas and biooil not used in the process can be stored and likely used for otherpurposes, or may be sold to a third party.

After having had the benefit of reading this disclosure, those skilledin the art will appreciate that the schematic diagram depicting thesystem and method of generating biochar, synthesis gas and bio oil usingthe biochar generator 100 according to an embodiment of the presentinvention, while depicted in FIG. 3 as being positioned onboard abiomass harvesting machine, may be positioned onboard a wheeledtow-behind vehicle attached to a biomass harvesting machine, while stillaccomplishing the goals, features and objectives according to thepresent invention. Furthermore, those skilled in the art will alsoappreciate that the schematic diagram depicting the system and method ofgenerating biochar, synthesis gas and bio oil using the biochargenerator 100 according to an embodiment of the present invention may bepositioned onboard an independently operated wheeled vehicle followingbehind the biomass harvesting machinery. Additionally, those skilled inthe art will appreciate that the synthesis gasses may be fed into thebiomass harvesting machinery as a source of fuel. Likewise, thoseskilled in the art will appreciate that the bio oil may be fed into theheater as a source of fuel. Finally, those skilled in the art willappreciate that while the heater is described as using either synthesisgas or bio oil as a fuel source, some other fuel source, such asgasoline or diesel, must be used, at least initially, until sufficientsynthesis gas or bio oil is produced as a result of the pyrolysisreaction to substitute for the initial fuel source.

A non-limiting example of a method of using the biochar generator 100according to an embodiment of the present invention, is now described. Auser desiring to generate biochar using a biochar generator 100according to an embodiment of the present invention may select a biomassharvesting machine having an onboard biochar generator, a biochargenerator onboard a vehicle towed behind the machinery harvesting thebiomass or a biochar generator onboard an independently operated vehiclefollowing behind the machinery harvesting the biomass. A user mayoperate the selected biomass harvesting machine/biochar generatorcombination to harvest biomass, for instance, a combine with an onboardbiochar generator harvesting corn. The waste biomass separated from theears of corn harvested by the combine may be directed into the auger 101of the onboard biochar generator 100. The waste biomass may be passedfrom the auger 101 into the pyrolysis chamber 102.

The temperature within the pyrolysis chamber 102 may be increased byintroducing heat produced by the heater 103 through the heat duct 104.The heated biomass within the pyrolysis chamber 103 may producevaporized synthesis gasses, vaporized bio oil and biochar. The vaporizedsynthesis gasses and vaporized bio oil may be permitted to exit thepyrolysis chamber 102 through the vapor duct 105. The vaporizedsynthesis gasses and vaporized bio oil may be condensed within the vaporcondenser 106. The condensed synthesis gasses may be collected in thesynthesis gas collection chamber 107. The collected synthesis gasses maybe fed into the heater 103 as a fuel source, may be fed into the combineas a fuel source or may be sold as a fuel. Those skilled in the art willappreciate that the synthesis gas collection chamber may be bypassed andthe synthesis gas may be fed directly in to the heater 103 or thecombine. The condensed bio oil may be collected in the bio oilcollection chamber 108. The collected bio oil may be fed into the heater103 as a fuel source, may be fed into the combine as a fuel source ormay be sold as a fuel. Similar to the condensed synthesis gas, thoseskilled in the art will appreciate that the bio oil collection chamber108 may be bypassed and the bio oil may be ded directly into the heater103 or the combine. The heated biochar may be permitted to enter thebiochar cooling chamber 109. The cooled biochar may be conveyed from thebiochar cooling chamber 109 to the biochar collection chamber 111 viathe biochar conveyer 110. The collected biochar may be applied to theharvested cornfield via the biochar application device 112. Thoseskilled in the art will appreciate that the biochar collection chamber111 may be bypassed and that the cooled bio char may be applied directlyto the harvested cornfield.

Additional features of the biochar generator according to an embodimentof the present invention are now described in greater detail. Asillustrated in FIG. 2, the biochar generator 100 may comprise apyrolysis chamber 102, an auger 101 connected to the pyrolysis chamber.The auger 101 may include an opening to accept a flow of biomass. Thebiochar generator 100 may also include a heater 103 and a vaporcondenser 106 connected to the pyrolysis chamber. The biochar generator100 may further include a synthesis gas collection chamber 107 incommunication with the vapor condenser to collect synthesis gas from thevapor condenser. A bio oil collection chamber 108 may be included andpositioned in communication with the vapor condenser to collect bio oilfrom the vapor condenser. The biochar generator 100 may also include abiochar collection chamber 109 in communication with the pyrolysischamber. The biochar collection chamber 109 may include a biocharconveyor 110 to collect biochar dispensed from the pyrolysis chamber. Abiochar cooling chamber 111 may be positioned in communication with thebiochar collection chamber via the biochar conveyor 110. The auger 101may fragment the flow of biomass before passing the flow of biomass intothe pyrolysis chamber 102.

In some embodiments of the biochar generator 100 according to thepresent invention, the auger 101 may permit selective control of anamount of air to be introduced into the pyrolysis chamber 102. The heatproduced by the heater 103 may be within a range of between about 300degrees Celsius and 600 degrees Celsius. The heat may be maintained foran amount of time. The heat may alternatively be maintained at differenttemperatures within the range, for different amounts of time.

The amount of time and/or the amount of heat may, for example, bedependent on the type of biomass that is being processed by the biochargenerator. Some types of biomass may require more exposure to heat thanother types of biomass to produce the biochar and, accordingly, theamount of time that the biomass is exposed to the heat may be varied.Alternatively, the amount of time and/or the amount of heat may, forexample, be dependent on a proportionate amount of synthesis gas, biooil, or biochar desired to be produced from the pyrolysis reaction. Thiscan be controlled using a controller, for example. More particularly,the heater 103 may be positioned in communication with a controller.

The present invention also contemplates the use of a computerizedprogram in communication with the controller to further control the heatexposure of the biomass. The computerized program may be carried by thevehicle and may be used to program generation of the biochar using thebiochar generator 100 according to an embodiment of the presentinvention. For exemplary purposes only, the computerized program mayinclude a database that may include information relating to differenttypes of biomass, and the requirements necessary for converting thedifferent types of biomass to biochar. The database may also includeinformation relating to expected biochar production based on the type ofbiomass being harvested, as well as based on other factors, i.e.,moisture content, density, etc. The computer program may be used todetermine certain settings to be used on the biochar generator, i.e.,with respect to the heat input, the auger speed, the amount of airintroduced into the pyrolysis chamber, etc. to most efficiently convertthe biomass to biochar. The computer program may also be used to predictthe amount of synthesis gas and bio oil that may be produced during thebiochar generation process, as well as monitor and record the amount offuel used by the vehicle that carried the biochar generator. Thoseskilled in the art will appreciate that there are several differentvariables in the biochar generation process that can be controlled usingthe computer program, and that the above is meant for exemplary purposesonly, and in no way meant to be limiting.

A heat duct 104 may selectively control passage of heat from the heater103 into the pyrolysis chamber 102. A pyrolysis reaction may occur inthe pyrolysis chamber 102 and may produce at least one product selectedfrom the group consisting of a vaporized synthesis gas, a vaporized biooil and the biochar.

In some embodiments of the biochar generator 100, a vapor duct 105 mayselectively control passage of the vaporized synthesis gas from thepyrolysis chamber 102 to the synthesis gas collection chamber 107. Thevapor duct 105 may also selectively control passage of the vaporized biooil from the pyrolysis chamber 102 to the bio oil collection chamber108. The synthesis gas collection chamber 107 may be connected to theheater 103, and the heater may be selectively fueled by the synthesisgas from the synthesis gas collection chamber. The bio oil collectionchamber 108 may also be connected to the heater 103, and the heater may,alternatively, be selectively fueled by the bio oil from the bio oilcollection chamber.

In some embodiments of the present invention, the biochar generator maybe located onboard a biomass harvesting machine. The bio oil collectionchamber 108 may be connected to a fuel system of the biomass harvestingmachine, and the biomass harvesting machine may be selectively fueled bythe bio oil from the bio oil collection chamber. In such an embodiment,the biochar generator 100 may be located onboard a wheeled tow-behindvehicle attached to a biomass harvesting machine.

In other embodiments of the present invention, the biochar generator 100may be located onboard an independently operated wheeled vehiclefollowing behind a biomass harvesting machine. For exemplary purposesonly, the independently operated wheeled vehicle with the biochargenerator 100 located onboard following behind a biomass harvestingmachine may include a synthesis gas delivery system connected to thesynthesis gas collection chamber 107 and a bio oil delivery systemconnected to the bio oil connection chamber 108. The synthesis gasdelivery system and the bio oil delivery system may permit the synthesisgas and/or the bio oil produced onboard the independently operatedwheeled vehicle to be delivered to a fuel system of the biomassharvesting machine, and the biomass harvesting machine may beselectively fueled by the synthesis gas and/or the bio oil. The bio oilcollection chamber 108 may also be connected to a fuel system of theindependently operated wheeled vehicle, and the vehicle may beselectively fueled by the bio oil from the bio oil collection chamber.

Those skilled in the art will appreciate that the present invention alsocontemplates the use of a single independently operated wheeled vehiclewith the biochar generator 100 located onboard to follow behind multiplebiomass harvesting machines, and that the above is meant for exemplarypurposes only, and is in no way meant to be limiting. A biocharapplication device 112 in communication with the biochar cooling chamber111 may selectively permit application of the biochar. The vehicle thatcarries the biochar generator may be fueled by the synthesis gas fromthe synthesis gas collection chamber 107 and/or the bio oil from the biooil collection chamber 108.

Many modifications and other embodiments of the invention will come tothe mind of one skilled in the art having the benefit of the teachingspresented in the foregoing descriptions and the associated drawings.Therefore, it is understood that the invention is not to be limited tothe specific embodiments disclosed.

1. A biochar generator to be carried by a vehicle and comprising: apyrolysis chamber; an auger connected to the pyrolysis chamber andincluding an opening to accept a flow of biomass; a heater connected tothe pyrolysis chamber; a vapor condenser connected to the pyrolysischamber; a synthesis gas collection chamber in communication with thevapor condenser to collect synthesis gas from the vapor condenser; a biooil collection chamber in communication with the vapor condenser tocollect bio oil from the vapor condenser; a biochar collection chamberin communication with the pyrolysis chamber and including a biocharconveyor to collect biochar dispensed from the pyrolysis chamber; abiochar cooling chamber in communication with the biochar collectionchamber via the biochar conveyor; and wherein the auger fragments theflow of biomass before passing the flow of biomass into the pyrolysischamber.
 2. A biochar generator according to claim 1 wherein the augerpermits selective control of an amount of air to be introduced into thepyrolysis chamber.
 3. A biochar generator according to claim 1 whereinheat is produced by the heater within a range of between about 300degrees Celsius and 600 degrees Celsius.
 4. A biochar generatoraccording to claim 3 wherein the heat is maintained for an amount oftime.
 5. A biochar generator according to claim 3 wherein a heat ductselectively controls passage of heat from the heater into the pyrolysischamber.
 6. A biochar generator according to claim 3 wherein a pyrolysisreaction occurs in the pyrolysis chamber and produces at least oneproduct selected from the group consisting of a vaporized synthesis gas,a vaporized bio oil and the biochar.
 7. A biochar generator according toclaim 6 wherein a vapor duct selectively controls passage of thevaporized synthesis gas from the pyrolysis chamber to the synthesis gascollection chamber.
 8. A biochar generator according to claim 6 whereina vapor duct selectively controls passage of the vaporized bio oil fromthe pyrolysis chamber to the bio oil collection chamber.
 9. A biochargenerator according to claim 1 wherein the synthesis gas collectionchamber is connected to the heater; and wherein the heater isselectively fueled by the synthesis gas from the synthesis gascollection chamber.
 10. A biochar generator according to claim 1 whereinthe bio oil collection chamber is connected to the heater; and whereinthe heater is selectively fueled by the bio oil from the bio oilcollection chamber.
 11. A biochar generator according to claim 1 whereinthe biochar generator is located onboard a biomass harvesting machine.12. A biochar generator according to claim 11 wherein the bio oilcollection chamber is connected to a fuel system of the biomassharvesting machine; and wherein the biomass harvesting machine isselectively fueled by the bio oil from the bio oil collection chamber.13. A biochar generator according to claim 1 wherein the biochargenerator is located onboard a wheeled tow-behind vehicle attached to abiomass harvesting machine.
 14. A biochar generator according to claim 1wherein the biochar generator is located onboard an independentlyoperated wheeled vehicle following behind a biomass harvesting machine.15. A biochar generator according to claim 14 wherein the bio oilcollection chamber is connected to a fuel system of the independentlyoperated wheeled vehicle following behind a biomass harvesting machine;and wherein the independently operated wheeled vehicle following behindthe biomass harvesting machine is selectively fueled by the bio oil fromthe bio oil collection chamber.
 16. A biochar generator according toclaim 1 further comprising a biochar application device in communicationwith the biochar cooling chamber to selectively permit application ofthe biochar.
 17. A biochar generator to be carried by a vehicle andcomprising: a pyrolysis chamber; an auger connected to the pyrolysischamber and including an opening to accept a flow of biomass; a heaterconnected to the pyrolysis chamber; a vapor condenser connected to thepyrolysis chamber; a synthesis gas collection chamber in communicationwith the vapor condenser to collect synthesis gas from the vaporcondenser; a bio oil collection chamber in communication with the vaporcondenser to collect bio oil from the vapor condenser; a biocharcollection chamber in communication with the pyrolysis chamber andincluding a biochar conveyor to collect biochar dispensed from thepyrolysis chamber, a biochar cooling chamber in communication with thebiochar collection chamber via the biochar conveyor; and a biocharapplication device in communication with the biochar cooling chamber toselectively permit application of the biochar; wherein the augerfragments the flow of biomass before passing the flow of biomass intothe pyrolysis chamber; wherein the auger permits selective control of anamount of air to be introduced into the pyrolysis chamber; wherein thesynthesis gas collection chamber is connected to the heater; wherein thebio oil collection chamber is connected to the heater; wherein theheater is selectively fueled by at least one of the synthesis gas fromthe synthesis gas collection chamber and the bio oil from the bio oilcollection chamber; wherein a pyrolysis reaction occurs in the pyrolysischamber and produces at least one product selected from the groupconsisting of a vaporized synthesis gas, a vaporized bio oil and thebiochar; wherein the vehicle that carries the biochar generator isfueled by at least one of the synthesis gas from the synthesis gascollection chamber and the bio oil from the bio oil collection chamber.18. A biochar generator according to claim 17 wherein heat is producedby the heater within a range of between about 300 degrees Celsius and600 degrees Celsius.
 19. A method of using a biochar generator to becarried by a vehicle, the biochar generator including a pyrolysischamber connected to an auger with an opening, a heater connected to thepyrolysis chamber, a vapor condenser connected to the pyrolysis chamber,a synthesis gas collection chamber in communication with the vaporcondenser, a bio oil collection chamber in communication with the vaporcondenser, a biochar collection chamber in communication with thepyrolysis chamber, a biochar conveyor, and a biochar cooling chamber incommunication with the biochar collection chamber: passing a flow ofbiomass through the opening in the auger; fragmenting the flow ofbiomass with the auger; passing the flow of biomass into the pyrolysischamber; producing heat from the heater; passing heat into the pyrolysischamber; creating a pyrolysis reaction in the pyrolysis chamber;producing a vaporized synthesis gas; producing a vaporized bio oil;producing a biochar; condensing a synthesis gas from the vaporizedsynthesis gas in the vapor condenser; condensing a bio oil from thevaporized bio oil in the vapor condenser; passing the synthesis gas intothe synthesis gas collection chamber; passing the bio oil into the biooil collection chamber; dropping the biochar onto the biochar conveyor;and conveying the biochar into the biochar cooling chamber.
 20. A methodaccording to claim 19 wherein the synthesis gas collection chamber isconnected to the heater; and wherein the heater is selectively fueled bythe synthesis gas from the synthesis gas collection chamber.
 21. Amethod according to claim 19 wherein the bio oil collection chamber isconnected to a fuel system of the vehicle; and wherein the vehicle isselectively fueled by the bio oil from the bio oil collection chamber.22. A method according to claim 19 wherein the biochar generator furthercomprises a biochar application device; and wherein the method furthercomprises depositing the biochar using the biochar application device.